Industrial Gas, Special Gas, Rare Gas manufacturer / supplier in China, offering Ultra-high purity 5N hydrogen chloride HCl gas with 99.999% purity, strict trace impurity control compliant with semiconductor manufacturing standards., Industrial grade 99.8% high purity anhydrous ammonia NH3 gas, refrigerant model R717, filled in standard 800L large capacity steel pressure cylinders., 99.8% high purity industrial anhydrous liquid ammonia NH3 gas, refrigerant code R717, low moisture and impurity content. and so on.